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7.6

100% cpu usage from usbport.sys thread

Asked by Tutalian in Computer CPU Processors, Windows XP Operating System

Tags: USBPORT.SYS, SYSTEM PROCESS, 100% CPU Usage, HP

I have an HP a1132n (XP Home) in the shop. There is a thread called USBPORT.SYS under the SYSTEM process is taking all CPU power. The only way I can temporarily stop it is by suspending it in Process Manager by www.sysinternals.com (back to 100% once restarted). How can I fix this issue? Here's what I've tried:

Malware Check (clean).
Removed all USB related devices from machine.
Removed all unneeded devices from machine.
Uninstalled USB Device drivers.
Updated BIOS version.
Deleted USBPORT.SYS (comes back instantly)
Created read-only 0KB USBPORT.SYS and replaced original (comes back instantly)

Any ideas?

Thanks.
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[+][-]09/16/09 06:21 PM, ID: 25352089Accepted Solution

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About this solution

Zones: Computer CPU Processors, Windows XP Operating System
Tags: USBPORT.SYS, SYSTEM PROCESS, 100% CPU Usage, HP
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Solution Provided By: Callandor
Participating Experts: 4
Solution Grade: A
 
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